Supercell over Laramie
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Wyoming Snow Precipitation Update

United States Natural Resources Water and Climate Center Department of Conservation Portland, Oregon Agriculture Service S N O W - P R E C I P I T A T I O N U P D A T E Based on Mountain Data from NRCS SNOTEL Sites As of TUESDAY: OCTOBER 23 , 2007 ----------------------------------------------------------------------------- BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION Data Site Name (Ft) % % Current Average Avg Current Average Avg ----------------------------------------------------------------------------- WYOMING SNAKE RIVER BASE CAMP 7030 1.2 .4 300* 5.0 1.5 333 COTTONWOOD CREEK 7600 2.1 .5 420* 5.0 2.2 227 GRANITE CREEK 6770 1.4 .3 467* 4.0 1.3 308 GRASSY LAKE 7265 1.5 .9 167* 5.9 2.5 236 GROS VENTRE SUMMIT 8750 2.0 1.0 200* 4.0 1.3 308 LEWIS LAKE DIVIDE 7850 1.4 .7 200* 5.6 2.3 243 PHILLIPS BENCH 8200 1.6 .8 200* 4.9 1.8 272 SALT RIVER SUMMIT 7600 .3 .2 150* 2.4 1.4 171 SNAKE RIVER STATION 6920 .6 .3 200* 4.7 1.6 294 SPRING CREEK DIVIDE 9000 1.9 .9 211* 3.3 1.9 174 THUMB DIVIDE 7980 1.1 .5 220* 4.2 1.5 280 TOGWOTEE PASS 9580 4.7 1.8 261* 5.5 2.1 262 TWO OCEAN PLATEAU 9240 5.8 2.1 276* 6.1 2.3 265 WILLOW CREEK 8450 3.0 1.1 273* 6.3 2.7 233 ----- ----- Basin wide percent of average 249* 253 UPPER YELLOWSTONE-MADISON BEARTOOTH LAKE 9275 4.6 2.0 230* 4.4 1.6 275 BLACK BEAR 8170 3.8 1.8 211* 6.0 2.6 231 CANYON 8090 1.2 .4 300* 3.9 1.3 300 FISHER CREEK 9100 5.9 1.8 328* 6.8 2.4 283 MADISON PLATEAU 7750 1.7 1.0 170* 4.7 1.8 261 NORTHEAST ENTRANCE 7350 .3 .2 150* 3.2 1.1 291 PARKER PEAK 9400 4.3 1.9 226* 5.3 1.7 312 SYLVAN LAKE 8420 2.2 1.4 157* 5.6 1.9 295 THUMB DIVIDE 7980 1.1 .5 220* 4.2 1.5 280 TWO OCEAN PLATEAU 9240 5.8 2.1 276* 6.1 2.3 265 WHISKEY CREEK 6800 .9 .4 225* 4.4 1.6 275 WHITE MILL 8700 4.3 1.4 307* 4.9 2.0 245 WOLVERINE 7650 .8 .3 267* 3.3 1.3 254 ----- ----- Basin wide percent of average 243* 272 WIND RIVER BURROUGHS CREEK 8750 2.0 .6 333* 3.8 1.2 317 COLD SPRINGS 9630 .0 .6 0* 2.3 1.4 164 DEER PARK 9700 1.7 1.7 100* 3.1 1.8 172 HOBBS PARK 10100 1.5 1.5 100* 3.3 1.6 206 LITTLE WARM 9370 1.2 .7 171* 3.1 1.3 238 SOUTH PASS 9040 .5 1.0 50* 2.4 1.6 150 ST. LAWRENCE ALT 8620 .0 .5 0* 1.4 1.3 108 TOGWOTEE PASS 9580 4.7 1.8 261* 5.5 2.1 262 TOWNSEND CREEK 8700 .4 .7 57* 2.6 1.6 162 ----- ----- Basin wide percent of average 132* 198 BIGHORN BASIN BALD MTN. 9380 3.0 2.1 143* 3.6 1.8 200 BEAR TRAP MEADOW 8200 .8 .4 200* 1.9 1.3 146 BLACKWATER 9780 5.2 2.3 226* 4.9 2.0 245 BONE SPRINGS DIV 9350 2.1 2.0 105 3.9 1.8 217 EVENING STAR 9200 4.3 2.0 215* 6.4 2.1 305 GRAVE SPRINGS 8550 1.3 .7 186* 2.5 1.6 156 KIRWIN 9550 3.5 1.3 269 4.7 1.3 362 MARQUETTE 8760 1.0 1.4 71 3.0 1.7 176 MIDDLE POWDER 7760 2.4 .9 267* 2.4 1.9 126 OWL CREEK 8975 .7 .6 117 2.4 .9 267 POWDER RIVER PASS 9480 1.3 .9 144* 3.1 1.4 221 SHELL CREEK 9580 3.9 2.1 186 4.6 1.5 307 SYLVAN LAKE 8420 2.2 1.4 157* 5.6 1.9 295 SYLVAN ROAD 7120 .5 .3 167* 5.0 1.6 312 TIMBER CREEK 7950 .5 .6 83* 3.1 1.2 258 YOUNTS PEAK 8350 2.0 1.0 200* 5.3 1.3 408 ----- ----- Basin wide percent of average 173* 247 SHOSHONE RIVER BLACKWATER 9780 5.2 2.3 226* 4.9 2.0 245 EVENING STAR 9200 4.3 2.0 215* 6.4 2.1 305 KIRWIN 9550 3.5 1.3 269 4.7 1.3 362 MARQUETTE 8760 1.0 1.4 71 3.0 1.7 176 SYLVAN LAKE 8420 2.2 1.4 157* 5.6 1.9 295 SYLVAN ROAD 7120 .5 .3 167* 5.0 1.6 312 YOUNTS PEAK 8350 2.0 1.0 200* 5.3 1.3 408 ----- ----- Basin wide percent of average 193* 293 POWDER-TONGUE BEAR TRAP MEADOW 8200 .8 .4 200* 1.9 1.3 146 BIG GOOSE 7990 1.9 .6 317* 4.1 1.6 256 BONE SPRINGS DIV 9350 2.1 2.0 105 3.9 1.8 217 BURGESS JUNCTION 7880 1.6 1.1 145* 3.3 1.6 206 CLOUD PEAK RESERVOIR 9860 3.1 1.0 310* 5.2 1.9 274 DOME LAKE 8880 2.1 1.3 162* 4.4 1.8 244 GRAVE SPRINGS 8550 1.3 .7 186* 2.5 1.6 156 HANSEN SAWMILL 8360 1.3 .5 260* 2.9 1.3 223 MIDDLE POWDER 7760 2.4 .9 267* 2.4 1.9 126 POWDER RIVER PASS 9480 1.3 .9 144* 3.1 1.4 221 SUCKER CREEK 8880 1.9 .9 211* 3.7 1.8 206 TIE CREEK 6870 .5 .4 125* 2.9 1.8 161 ----- ----- Basin wide percent of average 190* 204 BELLE FOURCHE BLIND PARK 6890 .0 .3 0* 1.5 1.9 79 COLE CANYON 5910 .0 .4 0* 1.0 -M * NORTH RAPID CREEK 6130 .0 .3 0* 1.2 1.8 67 ----- ----- Basin wide percent of average 0* 73 UPPER N. PLATTE RIVER COLUMBINE 9160 .5 .4 125* 3.5 1.8 194 DIVIDE PEAK 8860 1.4 1.2 117* 2.6 2.0 130 ELK RIVER 8700 .0 .4 0* 3.2 1.6 200 JOE WRIGHT 10120 2.3 1.7 135* 4.8 2.5 192 NORTH FRENCH CREEK 10130 2.3 2.3 100* 3.7 2.5 148 OLD BATTLE 9920 2.6 2.1 124* 4.1 2.6 158 SAGE CREEK BASIN 7850 .5 .6 83* 2.1 1.1 191 SOUTH BRUSH CREEK 8440 1.2 .5 240* 3.1 1.9 163 TOWER 10500 2.8 2.3 122* 4.8 2.9 166 WEBBER SPRINGS 9250 1.4 1.2 117* 3.5 2.3 152 WILLOW CREEK PASS 9540 2.1 .7 300* 3.0 1.5 200 ----- ----- Basin wide percent of average 128* 169 LOWER N. PLATTE - SWEETWATER - LARAMIE BROOKLYN LAKE 10220 1.3 1.6 81* 2.6 1.8 144 CASPER MTN. 7850 1.6 1.2 133* 3.3 1.8 183 DEADMAN HILL 10220 2.2 1.6 138* 3.3 1.8 183 DEER PARK 9700 1.7 1.7 100* 3.1 1.8 172 LAPRELE CREEK 8375 .7 .7 100* 2.2 1.4 157 RENO HILL 8500 2.1 1.2 175* 3.6 1.8 200 ROACH 9700 2.0 .8 250* 3.2 1.7 188 SAND LAKE 10050 3.7 2.3 161* 4.2 2.3 183 SOUTH PASS 9040 .5 1.0 50* 2.4 1.6 150 WINDY PEAK 7900 .8 .3 267* 1.8 1.3 138 ----- ----- Basin wide percent of average 134* 172 LITTLE SNAKE RIVER BATTLE MOUNTAIN 7440 .5 .3 167* 2.0 1.4 143 DIVIDE PEAK 8860 1.4 1.2 117* 2.6 2.0 130 OLD BATTLE 9920 2.6 2.1 124* 4.1 2.6 158 SANDSTONE RS 8150 .3 .3 100* 2.2 1.7 129 WHISKEY PARK 8950 1.2 1.1 109* 3.7 2.1 176 ----- ----- Basin wide percent of average 120* 149 UPPER GREEN RIVER BIG SANDY OPENING 9080 .8 .8 100* 1.9 1.3 146 BLIND BULL SUM 8900 1.8 1.1 164* 3.1 1.6 194 EAST RIM DIVIDE 7930 .4 .3 133* 1.9 1.0 190 ELKHART PARK G.S. 9400 1.1 .5 220* 2.5 1.4 179 GROS VENTRE SUMMIT 8750 2.0 1.0 200* 4.0 1.3 308 KENDALL R.S. 7740 .8 .3 267* 2.4 1.1 218 LOOMIS PARK 8240 1.1 .6 183* 2.5 1.3 192 NEW FORK LAKE 8340 .7 .3 233* 2.3 1.1 209 SNIDER BASIN 8060 .4 .4 100* 1.9 1.2 158 SPRING CREEK DIVIDE 9000 1.9 .9 211* 3.3 1.9 174 TRIPLE PEAK 8500 1.5 .7 214* 4.4 1.6 275 ----- ----- Basin wide percent of average 181* 204 LOWER GREEN RIVER HAMS FORK 7840 .1 .2 50* 1.6 1.1 145 HEWINTA 9500 -M .6 * 4.3 1.8 239 HICKERSON PARK 9100 .2 .2 100* 2.9 1.3 223 HOLE-IN-ROCK 9150 .2 .2 100* 3.3 1.2 275 INDIAN CREEK 9425 1.8 1.0 180* 2.7 1.9 142 KELLEY R.S. 8180 .7 .6 117* 2.8 1.6 175 STEEL CREEK PARK 10100 3.7 1.2 308* 4.6 1.7 271 ----- ----- Basin wide percent of average 197* 209 UPPER BEAR RIVER BUG LAKE 7950 .3 .9 33* 1.2 1.7 71 HAYDEN FORK 9100 .6 .6 100* 3.4 1.8 189 KELLEY R.S. 8180 .7 .6 117* 2.8 1.6 175 LILY LAKE 9050 .6 .7 86* 3.5 1.8 194 MONTE CRISTO 8960 .9 1.2 75* 3.4 2.1 162 SALT RIVER SUMMIT 7600 .3 .2 150* 2.4 1.4 171 TRIAL LAKE 9960 1.5 1.4 107* 2.8 2.1 133 ----- ----- Basin wide percent of average 88* 156 ----------------------------------------------------------------------------- -M = Missing data * = Data may not provide a valid measure of conditions. Units = inches for the Current and Average Snow Water Equivalent and Total Precipitation values If the Basin wide percent of average value is flagged as potentially invalid, care should be taken to evaluate if the value is representative of conditions in the basin. The SNOW WATER EQUIVALENT Percent of Average represents the snow water equivalent found at selected SNOTEL sites in or near the basin compared to the average value for those sites on this day. The TOTAL PRECIPITATION Percent of Average represents the total precipitation (beginning October 1st) found at selected SNOTEL sites in or near the basin compared to the average value for those sites on this day. Contact your state water supply staff for assistance. Reference period for average conditions is 1971-2000. Provisional data, subject to revision. ---------------------------------------------------------------------------- -M = Missing data * = Data may not provide a valid measure of conditions. Units = inches for the Current and Normal Snow Water Equivalent and Total Precipitation values If the Basin Index (%) value is flagged as potentially invalid, care should be taken to evaluate if the value is representative of conditions in the basin. The SNOW WATER EQUIVALENT Percent of Median represents the snow water equivalent found at selected SNOTEL sites in or near the basin compared to the Median value for those sites on this day. The TOTAL PRECIPITATION Percent of Average represents the total precipitation (beginning October 1st) found at selected SNOTEL sites in or near the basin compared to the Average value for those sites on this day. Contact your state water supply staff for assistance. Medians and averages are calculated for the period 1981-2010. Provisional data, subject to revision. * Site -- Either: (a) the current value is missing; (b) the median or average for the day is not available or is zero; or (c) for snow water equivalent, the median for the day is less than 10% of the maximum median value for the year. * Basin - More than half of the sites within the basin are flagged with *, preventing the calculation of a meaningful basin index. The basin index is calculated as the sum of the valid current values divided by the sum of the corresponding medians (for snow water equivalent) or averages (for precipitation) and the resulting fraction multiplied by 100.